NV C-4E Drywall Practice Questions - Nevada C-4E Drywall Contractor Examination Exam

When a control joint is placed in a fire-resistance-rated gypsum partition, what additional provision is required?

Leave a 6-inch open slot with no backing so the wall can vent Install a tested fire-rated control-joint detail with backing (for example as in GA-234) so the rating is not broken Fill the joint with ordinary latex caulk only Omit the joint; fire-rated walls may never have control joints

Correct Answer:

Install a tested fire-rated control-joint detail with backing (for example as in GA-234) so the rating is not broken

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